(function (tree) {
tree.Paren = function (node) {
this.value = node;
}; tree.Paren.prototype = {
type: "Paren", accept: function (visitor) { this.value = visitor.visit(this.value); }, genCSS: function (env, output) { output.add('('); this.value.genCSS(env, output); output.add(')'); }, toCSS: tree.toCSS, eval: function (env) { return new(tree.Paren)(this.value.eval(env)); }
};
})(require(‘../tree’));